You said, "the U.S. murder rate is not all that remarkable". Someone pointed out that claim is demonstrably false. So your response is, "is getting murdered a real concern?" You established a metric, and when it was shown not to support your world view, you try to discredit your own metric. That's called moving the goal post. It is not something a "rational person" does.
An irrational person uses irrelevant data as justification to ignore preventable deaths. We're not talking about how many car wrecks, or heart attacks, or rabid vending machines are out there, we're talking about gun-related homicide and suicide. Preventable deaths that we can prevent just like every other first world country does, but we just choose not to.
I think the point was that the rate is low enough that the risk of being murdered is not a concern for most people most of the time - yes, it is abnormally high relative to other countries, but it's also so low that it's extremely unlikely to be an individual's cause of death.
Your odds of being murdered in the U.S. are very low compared to many other ways of dying (see e.g. https://www.cdc.gov/nchs/products/databriefs/db395.htm), so yeah, it'd be great to see the murder rate lowered (that's always good, right?), but even if you did something drastic that managed to cut the odds in half, it would not have any discernible impact on most people's day to day lives nor on their ultimate cause of death because so few people end up dying that way.
An irrational person uses irrelevant data as justification to ignore preventable deaths. We're not talking about how many car wrecks, or heart attacks, or rabid vending machines are out there, we're talking about gun-related homicide and suicide. Preventable deaths that we can prevent just like every other first world country does, but we just choose not to.